Asorath weapon says it strikes at S6. This has nothign to do with his Strength. Furios charge would make him strength 5...but his weapon will still strike at S6. It's really one of his few down sides (that and dieing in one of my last game to a normal dreadnought ^-^)
Powerfists, Claws etc will strike at S9 if they have FC, as modifires are done AFTER everythign else. But do you really need a Strength 10 weapon when strieking most rear armour?
Powerfists, Claws etc will strike at S9 if they have FC, as modifires are done AFTER everythign else. But do you really need a Strength 10 weapon when strieking most rear armour?